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- From: stretch@emunix.emich.edu (Brian Stretch)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Diamond SpeedStar 24X REVIEW
- Message-ID: <9208311800.AA09941@emunix.emich.edu>
- Date: 31 Aug 92 18:00:16 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Lines: 92
-
-
- REVIEW: Diamond SpeedStar 24X
-
- Written 8/27/92 by Brian Stretch (stretch@emunix.emich.edu)
-
-
- The Diamond SpeedStar 24X is a 1 megabyte DRAM video card using the Western
- Digital Paradise accelerated graphics engine. In addition to standard VGA
- modes, it is capable of displaying SVGA graphics from 640x480x16million
- (noninterlaced, 60Hz) to 1280x1024x16 (interlaced). Despite its use of DRAM,
- it benchmarks significantly faster than VRAM-based S3 911 cards such as the
- Diamond Stealth, and carries a street price of around $200.
-
-
- THE TESTS
-
- I tested this card on a 386DX-40 (C&T PEAK chipset) with an ADI Microscan 3E
- 14" .28dp non-interlaced microprocessor-controlled monitor. Windows
- benchmarks were performed with PC Lab's Windows Benchmarks v2.5 (Winmarks)
- and Texas Instrument's WinTach v1.0 (RPMs). At 1024x768x256 @ 60Hz, the DSS
- 24X scored an impressive 10.5M Winmarks, helped along by a 3.46M rating on
- the heavily-weighted MS SRCCOPY section (versus 1.025M for the Compaq 386/25e
- PC Magazine uses as its base), and an amazing 29.7M pixes/sec on Random
- Rectangles (versus 3.83M for the Compaq). System Font Scroll weighed in at
- 12,462 chars/sec, with other fonts scoring within 1,000cps of that point. On
- Wintach, the card scored an overall RPM of 9.57 (1.0 being 640x480x16 on a
- 386DX-20 of an unnamed incarnation), with individual scores of 5.12 on Word
- Processing, 8.03 on CAD, 9.01 on Paint, and 16.12 on Spreadsheet. During all
- the tests, the hardware cursor remained rock steady.
-
- Unfortunately, when the card was put into any of the HiColor or Truecolor
- modes, it appeared that all acceleration advantages were lost. The cursor
- flickered during benchmarks, indicating that the hardware cursor function was
- not being used, and the Winmark score dropped to 1.6M, consistent with a
- decent but non-accelerated card.
-
- WHAT ABOUT DOS?
-
- Most accerated cards fall flat when used with DOS. The S3 911, a screamer
- under Windows, runs half as fast as a TSENG4000 under plain old MSDOS. The
- DSS 24X is a refreshing exception--with one annoyance. It's fast, but it
- will not operate with a bus speed faster than 10MHz (my TSENG w/Hicolor was
- happy at 20MHz, tho certain other cards flaked out after 13.3). This limited
- its Vidspeed 3.2 (equivilant to the Landmark 2.0 video benchmark--guess what
- Landmark licensed?) score to about 4,600 chars/msec--the same score that my
- TSENG received at 13.3MHz.
-
- Here's a little secret for you, kiddies: the TSENG4000 is not the fastest
- frame buffer around. The Western Digital Paradise (non-accelerated) 1meg
- card is about 20% faster, and no-name Paradise cards (if you can find one)
- are cheaper than no-name TSENGs (you can get a Paradise w/Hicolor for the
- price of a plain TSENG). The accelerated Paradise seems to have retained its
- non-accelerated predecessor's attributes.
-
- Unfortunately, I've yet to find any DOS graphics software that is compatible
- with the 1meg Paradise chip, and not all the 512K Paradise software worked
- either. CShow (newest version at this time) displayed correctly at
- 640x480x256 and 800x600x256 with its Paradise drivers, but VPic 5.0's failed.
- Both programs' VESA drivers failed, despite VPic's WHICHVGA.COM program
- correctly detecting the DSS 24X's v1.01 BIOS's VESA modes. Basically, if you
- want to run DOS SVGA software, forget it. But for standard-issue DOS VGA
- games, such as Falcon 3.0, this card is as good as or better than TSENG4000.
-
- NICETIES
-
- Diamond cards have a couple of features I really like. Number one is the bank
- of DIP switches peeking thru the mounting bracket that select the refresh
- rates for 800x600 and 1024x768 resolutions--much nicer than having to run a
- software program (which is provided) at startup.
-
- Number two is that Diamond's cards are US-made. It's been my experience that
- anyone still making computer stuff in-country is making good stuff, and
- Diamond is no exception. (CH Flightstick, anyone?)
-
- Then there's the included software. Halo Desktop Imager v1.1 is included
- ("Professional Imaging Tool for Windows"), which might be amusing to play
- with. Diamond uses their own program to install/change/delete video drivers,
- which I rather liked. (Hint: RTFM before you try installing the drivers).
-
- NOT NICE
-
- No OS/2 2.0 drivers in sight. (I checked the Diamond BBS, too).
-
- THE VERDICT
-
- If you want fast Windows performence without your DOS games taking a hit,
- this is the card to get. And at ~$200 street, it's one of the cheapest
- accelerators around. For strictly DOS VGA and Windows use, it's by far the
- best choice currently on the market. If you need a new card now, buy one.
-
- (eof)
-
-